/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:01:05,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:01:05,593 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:01:05,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:01:05,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:01:05,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:01:05,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:01:05,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:01:05,635 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:01:05,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:01:05,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:01:05,640 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:01:05,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:01:05,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:01:05,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:01:05,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:01:05,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:01:05,642 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:01:05,642 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:01:05,642 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:01:05,642 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:01:05,643 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:01:05,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:01:05,644 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:01:05,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:01:05,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:01:05,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:01:05,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:01:05,645 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:01:05,645 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:01:05,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:01:05,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:01:05,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:01:05,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:01:05,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:01:05,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:01:05,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:01:05,938 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:01:05,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-11-17 15:01:07,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:01:07,429 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:01:07,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-11-17 15:01:07,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06d7fb4b/601156f9831447b5b40131df2eefe26e/FLAGf34c4996e [2023-11-17 15:01:07,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06d7fb4b/601156f9831447b5b40131df2eefe26e [2023-11-17 15:01:07,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:01:07,464 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:01:07,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:01:07,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:01:07,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:01:07,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:01:07" (1/1) ... [2023-11-17 15:01:07,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3a25fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:07, skipping insertion in model container [2023-11-17 15:01:07,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:01:07" (1/1) ... [2023-11-17 15:01:07,523 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:01:07,929 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-11-17 15:01:07,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:01:07,979 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:01:08,022 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-11-17 15:01:08,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:01:08,122 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:01:08,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08 WrapperNode [2023-11-17 15:01:08,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:01:08,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:01:08,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:01:08,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:01:08,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,199 INFO L138 Inliner]: procedures = 278, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 165 [2023-11-17 15:01:08,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:01:08,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:01:08,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:01:08,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:01:08,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:01:08,255 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:01:08,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:01:08,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:01:08,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (1/1) ... [2023-11-17 15:01:08,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:01:08,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:08,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:01:08,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:01:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 15:01:08,331 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 15:01:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 15:01:08,331 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 15:01:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:01:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:01:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:01:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:01:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:01:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:01:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:01:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:01:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:01:08,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:01:08,335 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:01:08,470 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:01:08,472 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:01:08,779 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:01:08,817 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:01:08,819 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:01:08,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:01:08 BoogieIcfgContainer [2023-11-17 15:01:08,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:01:08,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:01:08,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:01:08,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:01:08,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:01:07" (1/3) ... [2023-11-17 15:01:08,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259c3a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:01:08, skipping insertion in model container [2023-11-17 15:01:08,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:01:08" (2/3) ... [2023-11-17 15:01:08,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259c3a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:01:08, skipping insertion in model container [2023-11-17 15:01:08,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:01:08" (3/3) ... [2023-11-17 15:01:08,827 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-11-17 15:01:08,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:01:08,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 15:01:08,843 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:01:08,942 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:01:08,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 172 transitions, 358 flow [2023-11-17 15:01:09,079 INFO L124 PetriNetUnfolderBase]: 10/170 cut-off events. [2023-11-17 15:01:09,080 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:01:09,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 10/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 430 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 128. Up to 3 conditions per place. [2023-11-17 15:01:09,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 172 transitions, 358 flow [2023-11-17 15:01:09,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 160 transitions, 329 flow [2023-11-17 15:01:09,096 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:01:09,106 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 160 transitions, 329 flow [2023-11-17 15:01:09,109 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 160 transitions, 329 flow [2023-11-17 15:01:09,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 160 transitions, 329 flow [2023-11-17 15:01:09,153 INFO L124 PetriNetUnfolderBase]: 10/160 cut-off events. [2023-11-17 15:01:09,153 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:01:09,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 160 events. 10/160 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 349 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 128. Up to 3 conditions per place. [2023-11-17 15:01:09,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 8602 [2023-11-17 15:01:13,178 INFO L134 LiptonReduction]: Checked pairs total: 11163 [2023-11-17 15:01:13,179 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-11-17 15:01:13,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:01:13,198 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f42d854, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:01:13,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 15:01:13,203 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:01:13,203 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2023-11-17 15:01:13,203 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:01:13,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:13,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:01:13,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:13,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash -411145411, now seen corresponding path program 1 times [2023-11-17 15:01:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:13,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419015606] [2023-11-17 15:01:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:13,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419015606] [2023-11-17 15:01:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419015606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:13,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:13,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:01:13,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301147567] [2023-11-17 15:01:13,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:13,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:13,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:13,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:13,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 328 [2023-11-17 15:01:13,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:13,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 328 [2023-11-17 15:01:13,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:13,818 INFO L124 PetriNetUnfolderBase]: 845/1354 cut-off events. [2023-11-17 15:01:13,818 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-17 15:01:13,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2770 conditions, 1354 events. 845/1354 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5634 event pairs, 243 based on Foata normal form. 0/1054 useless extension candidates. Maximal degree in co-relation 2564. Up to 777 conditions per place. [2023-11-17 15:01:13,829 INFO L140 encePairwiseOnDemand]: 322/328 looper letters, 55 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-11-17 15:01:13,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 59 transitions, 251 flow [2023-11-17 15:01:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:13,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-11-17 15:01:13,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111788617886179 [2023-11-17 15:01:13,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-11-17 15:01:13,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-11-17 15:01:13,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:13,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-11-17 15:01:13,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,862 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 75 flow. Second operand 3 states and 503 transitions. [2023-11-17 15:01:13,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 59 transitions, 251 flow [2023-11-17 15:01:13,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 59 transitions, 243 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:01:13,868 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 98 flow [2023-11-17 15:01:13,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-11-17 15:01:13,873 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-17 15:01:13,874 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 98 flow [2023-11-17 15:01:13,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:13,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:13,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:13,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:01:13,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:13,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash 967127625, now seen corresponding path program 1 times [2023-11-17 15:01:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:13,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19868770] [2023-11-17 15:01:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:13,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:14,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:14,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19868770] [2023-11-17 15:01:14,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19868770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:14,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:14,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:01:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750475050] [2023-11-17 15:01:14,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:14,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:14,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 328 [2023-11-17 15:01:14,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:14,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 328 [2023-11-17 15:01:14,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:14,195 INFO L124 PetriNetUnfolderBase]: 921/1490 cut-off events. [2023-11-17 15:01:14,195 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-11-17 15:01:14,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3263 conditions, 1490 events. 921/1490 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6065 event pairs, 411 based on Foata normal form. 44/1254 useless extension candidates. Maximal degree in co-relation 2990. Up to 1191 conditions per place. [2023-11-17 15:01:14,207 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 49 selfloop transitions, 2 changer transitions 3/54 dead transitions. [2023-11-17 15:01:14,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 251 flow [2023-11-17 15:01:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-11-17 15:01:14,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2023-11-17 15:01:14,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-11-17 15:01:14,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-11-17 15:01:14,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:14,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-11-17 15:01:14,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,220 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 98 flow. Second operand 3 states and 512 transitions. [2023-11-17 15:01:14,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 251 flow [2023-11-17 15:01:14,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:01:14,225 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 106 flow [2023-11-17 15:01:14,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-11-17 15:01:14,227 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-17 15:01:14,227 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 106 flow [2023-11-17 15:01:14,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:14,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:14,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:01:14,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:14,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash 353291060, now seen corresponding path program 1 times [2023-11-17 15:01:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:14,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661052389] [2023-11-17 15:01:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:14,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:14,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:14,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661052389] [2023-11-17 15:01:14,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661052389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:14,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:14,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:01:14,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250155470] [2023-11-17 15:01:14,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:14,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:14,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:14,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:14,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:14,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 328 [2023-11-17 15:01:14,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:14,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 328 [2023-11-17 15:01:14,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:14,563 INFO L124 PetriNetUnfolderBase]: 971/1568 cut-off events. [2023-11-17 15:01:14,564 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2023-11-17 15:01:14,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3556 conditions, 1568 events. 971/1568 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6564 event pairs, 679 based on Foata normal form. 52/1384 useless extension candidates. Maximal degree in co-relation 3276. Up to 1433 conditions per place. [2023-11-17 15:01:14,573 INFO L140 encePairwiseOnDemand]: 325/328 looper letters, 51 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-11-17 15:01:14,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 55 transitions, 272 flow [2023-11-17 15:01:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:14,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-11-17 15:01:14,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111788617886179 [2023-11-17 15:01:14,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-11-17 15:01:14,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-11-17 15:01:14,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:14,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-11-17 15:01:14,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,580 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 106 flow. Second operand 3 states and 503 transitions. [2023-11-17 15:01:14,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 55 transitions, 272 flow [2023-11-17 15:01:14,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:14,583 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 124 flow [2023-11-17 15:01:14,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-11-17 15:01:14,584 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-11-17 15:01:14,585 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 124 flow [2023-11-17 15:01:14,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:14,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:14,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:01:14,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:14,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:14,587 INFO L85 PathProgramCache]: Analyzing trace with hash 245283234, now seen corresponding path program 1 times [2023-11-17 15:01:14,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:14,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505354615] [2023-11-17 15:01:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:14,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:14,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505354615] [2023-11-17 15:01:14,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505354615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:01:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207070181] [2023-11-17 15:01:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:14,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:14,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:01:14,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:01:14,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:01:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:14,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:01:14,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:01:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:14,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:01:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:14,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207070181] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:01:14,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:01:14,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-17 15:01:14,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466973470] [2023-11-17 15:01:14,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:01:14,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:01:14,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:01:14,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:01:14,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 328 [2023-11-17 15:01:14,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 124 flow. Second operand has 10 states, 10 states have (on average 147.6) internal successors, (1476), 10 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:14,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:14,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 328 [2023-11-17 15:01:14,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:15,492 INFO L124 PetriNetUnfolderBase]: 1844/2985 cut-off events. [2023-11-17 15:01:15,492 INFO L125 PetriNetUnfolderBase]: For 1212/1212 co-relation queries the response was YES. [2023-11-17 15:01:15,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7213 conditions, 2985 events. 1844/2985 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13737 event pairs, 356 based on Foata normal form. 48/2605 useless extension candidates. Maximal degree in co-relation 6734. Up to 844 conditions per place. [2023-11-17 15:01:15,511 INFO L140 encePairwiseOnDemand]: 322/328 looper letters, 164 selfloop transitions, 22 changer transitions 0/186 dead transitions. [2023-11-17 15:01:15,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 186 transitions, 916 flow [2023-11-17 15:01:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 15:01:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 15:01:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1625 transitions. [2023-11-17 15:01:15,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954268292682927 [2023-11-17 15:01:15,516 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1625 transitions. [2023-11-17 15:01:15,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1625 transitions. [2023-11-17 15:01:15,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:15,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1625 transitions. [2023-11-17 15:01:15,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 162.5) internal successors, (1625), 10 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 328.0) internal successors, (3608), 11 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,528 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 328.0) internal successors, (3608), 11 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,528 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 124 flow. Second operand 10 states and 1625 transitions. [2023-11-17 15:01:15,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 186 transitions, 916 flow [2023-11-17 15:01:15,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 186 transitions, 903 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:15,539 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 292 flow [2023-11-17 15:01:15,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2023-11-17 15:01:15,540 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-17 15:01:15,541 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 292 flow [2023-11-17 15:01:15,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 147.6) internal successors, (1476), 10 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:15,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:15,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 15:01:15,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:01:15,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:15,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:15,750 INFO L85 PathProgramCache]: Analyzing trace with hash -934445737, now seen corresponding path program 1 times [2023-11-17 15:01:15,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:15,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902673964] [2023-11-17 15:01:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:15,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:15,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902673964] [2023-11-17 15:01:15,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902673964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:15,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:15,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:01:15,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712426193] [2023-11-17 15:01:15,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:15,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:01:15,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:01:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:01:15,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 328 [2023-11-17 15:01:15,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:15,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:15,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 328 [2023-11-17 15:01:15,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:16,043 INFO L124 PetriNetUnfolderBase]: 622/1127 cut-off events. [2023-11-17 15:01:16,043 INFO L125 PetriNetUnfolderBase]: For 363/363 co-relation queries the response was YES. [2023-11-17 15:01:16,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 1127 events. 622/1127 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4605 event pairs, 98 based on Foata normal form. 0/1015 useless extension candidates. Maximal degree in co-relation 2312. Up to 878 conditions per place. [2023-11-17 15:01:16,049 INFO L140 encePairwiseOnDemand]: 322/328 looper letters, 48 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-11-17 15:01:16,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 341 flow [2023-11-17 15:01:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:01:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:01:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-11-17 15:01:16,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020325203252033 [2023-11-17 15:01:16,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-11-17 15:01:16,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-11-17 15:01:16,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:16,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-11-17 15:01:16,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,055 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 292 flow. Second operand 3 states and 494 transitions. [2023-11-17 15:01:16,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 341 flow [2023-11-17 15:01:16,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 329 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:16,059 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 212 flow [2023-11-17 15:01:16,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-17 15:01:16,062 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-17 15:01:16,062 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 212 flow [2023-11-17 15:01:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:16,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:16,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:01:16,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:16,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1806519839, now seen corresponding path program 1 times [2023-11-17 15:01:16,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:16,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292349575] [2023-11-17 15:01:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:16,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:16,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:16,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292349575] [2023-11-17 15:01:16,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292349575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:16,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:16,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:01:16,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128621830] [2023-11-17 15:01:16,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:16,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:01:16,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:16,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:01:16,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:01:16,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 328 [2023-11-17 15:01:16,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:16,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 328 [2023-11-17 15:01:16,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:16,360 INFO L124 PetriNetUnfolderBase]: 736/1335 cut-off events. [2023-11-17 15:01:16,360 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2023-11-17 15:01:16,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 1335 events. 736/1335 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5469 event pairs, 220 based on Foata normal form. 12/1309 useless extension candidates. Maximal degree in co-relation 2850. Up to 529 conditions per place. [2023-11-17 15:01:16,369 INFO L140 encePairwiseOnDemand]: 322/328 looper letters, 80 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-11-17 15:01:16,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 536 flow [2023-11-17 15:01:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:01:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:01:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 804 transitions. [2023-11-17 15:01:16,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4902439024390244 [2023-11-17 15:01:16,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 804 transitions. [2023-11-17 15:01:16,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 804 transitions. [2023-11-17 15:01:16,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:16,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 804 transitions. [2023-11-17 15:01:16,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,379 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,379 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 212 flow. Second operand 5 states and 804 transitions. [2023-11-17 15:01:16,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 536 flow [2023-11-17 15:01:16,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 91 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:01:16,384 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 263 flow [2023-11-17 15:01:16,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-11-17 15:01:16,387 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-11-17 15:01:16,387 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 263 flow [2023-11-17 15:01:16,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:16,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:16,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:16,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:01:16,388 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:16,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:16,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1481129572, now seen corresponding path program 1 times [2023-11-17 15:01:16,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:16,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944864135] [2023-11-17 15:01:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:16,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:17,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:17,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944864135] [2023-11-17 15:01:17,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944864135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:17,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:17,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-17 15:01:17,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666126851] [2023-11-17 15:01:17,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:17,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:01:17,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:17,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:01:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:01:17,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 328 [2023-11-17 15:01:17,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 263 flow. Second operand has 14 states, 14 states have (on average 101.5) internal successors, (1421), 14 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:17,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:17,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 328 [2023-11-17 15:01:17,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:18,229 INFO L124 PetriNetUnfolderBase]: 1092/1986 cut-off events. [2023-11-17 15:01:18,230 INFO L125 PetriNetUnfolderBase]: For 1319/1319 co-relation queries the response was YES. [2023-11-17 15:01:18,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5170 conditions, 1986 events. 1092/1986 cut-off events. For 1319/1319 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9287 event pairs, 258 based on Foata normal form. 14/1920 useless extension candidates. Maximal degree in co-relation 3444. Up to 1170 conditions per place. [2023-11-17 15:01:18,242 INFO L140 encePairwiseOnDemand]: 311/328 looper letters, 127 selfloop transitions, 31 changer transitions 4/162 dead transitions. [2023-11-17 15:01:18,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 162 transitions, 953 flow [2023-11-17 15:01:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 15:01:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 15:01:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1845 transitions. [2023-11-17 15:01:18,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33088235294117646 [2023-11-17 15:01:18,249 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1845 transitions. [2023-11-17 15:01:18,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1845 transitions. [2023-11-17 15:01:18,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:18,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1845 transitions. [2023-11-17 15:01:18,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 108.52941176470588) internal successors, (1845), 17 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:18,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:18,263 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:18,263 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 263 flow. Second operand 17 states and 1845 transitions. [2023-11-17 15:01:18,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 162 transitions, 953 flow [2023-11-17 15:01:18,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 162 transitions, 934 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 15:01:18,270 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 542 flow [2023-11-17 15:01:18,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=542, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-17 15:01:18,271 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2023-11-17 15:01:18,271 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 542 flow [2023-11-17 15:01:18,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 101.5) internal successors, (1421), 14 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:18,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:18,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:18,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:01:18,272 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:18,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:18,272 INFO L85 PathProgramCache]: Analyzing trace with hash 146060168, now seen corresponding path program 2 times [2023-11-17 15:01:18,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:18,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160893271] [2023-11-17 15:01:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:19,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:19,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160893271] [2023-11-17 15:01:19,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160893271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:19,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:19,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:01:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664511258] [2023-11-17 15:01:19,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:19,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:01:19,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:19,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:01:19,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:01:19,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 328 [2023-11-17 15:01:19,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 542 flow. Second operand has 15 states, 15 states have (on average 96.4) internal successors, (1446), 15 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:19,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:19,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 328 [2023-11-17 15:01:19,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:20,147 INFO L124 PetriNetUnfolderBase]: 1566/2843 cut-off events. [2023-11-17 15:01:20,148 INFO L125 PetriNetUnfolderBase]: For 2861/2861 co-relation queries the response was YES. [2023-11-17 15:01:20,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8586 conditions, 2843 events. 1566/2843 cut-off events. For 2861/2861 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 13935 event pairs, 454 based on Foata normal form. 4/2719 useless extension candidates. Maximal degree in co-relation 5704. Up to 1754 conditions per place. [2023-11-17 15:01:20,170 INFO L140 encePairwiseOnDemand]: 312/328 looper letters, 146 selfloop transitions, 36 changer transitions 4/186 dead transitions. [2023-11-17 15:01:20,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 186 transitions, 1382 flow [2023-11-17 15:01:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:01:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:01:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1462 transitions. [2023-11-17 15:01:20,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31837979094076657 [2023-11-17 15:01:20,177 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1462 transitions. [2023-11-17 15:01:20,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1462 transitions. [2023-11-17 15:01:20,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:20,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1462 transitions. [2023-11-17 15:01:20,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 104.42857142857143) internal successors, (1462), 14 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:20,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 328.0) internal successors, (4920), 15 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:20,188 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 328.0) internal successors, (4920), 15 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:20,188 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 542 flow. Second operand 14 states and 1462 transitions. [2023-11-17 15:01:20,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 186 transitions, 1382 flow [2023-11-17 15:01:20,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 186 transitions, 1362 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-17 15:01:20,202 INFO L231 Difference]: Finished difference. Result has 104 places, 106 transitions, 922 flow [2023-11-17 15:01:20,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=922, PETRI_PLACES=104, PETRI_TRANSITIONS=106} [2023-11-17 15:01:20,203 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 70 predicate places. [2023-11-17 15:01:20,203 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 106 transitions, 922 flow [2023-11-17 15:01:20,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 96.4) internal successors, (1446), 15 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:20,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:20,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:20,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:01:20,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:20,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash 760784760, now seen corresponding path program 3 times [2023-11-17 15:01:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:20,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494473339] [2023-11-17 15:01:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:01:20,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494473339] [2023-11-17 15:01:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494473339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:20,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:20,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 15:01:20,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251255815] [2023-11-17 15:01:20,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:20,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:01:20,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:20,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:01:20,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:01:20,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 328 [2023-11-17 15:01:20,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 106 transitions, 922 flow. Second operand has 15 states, 15 states have (on average 96.4) internal successors, (1446), 15 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:20,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:20,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 328 [2023-11-17 15:01:20,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:22,230 INFO L124 PetriNetUnfolderBase]: 1872/3403 cut-off events. [2023-11-17 15:01:22,230 INFO L125 PetriNetUnfolderBase]: For 4925/4925 co-relation queries the response was YES. [2023-11-17 15:01:22,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11094 conditions, 3403 events. 1872/3403 cut-off events. For 4925/4925 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 17430 event pairs, 336 based on Foata normal form. 14/3259 useless extension candidates. Maximal degree in co-relation 8098. Up to 1153 conditions per place. [2023-11-17 15:01:22,272 INFO L140 encePairwiseOnDemand]: 312/328 looper letters, 130 selfloop transitions, 73 changer transitions 4/207 dead transitions. [2023-11-17 15:01:22,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 207 transitions, 1743 flow [2023-11-17 15:01:22,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:01:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:01:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1854 transitions. [2023-11-17 15:01:22,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31402439024390244 [2023-11-17 15:01:22,279 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1854 transitions. [2023-11-17 15:01:22,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1854 transitions. [2023-11-17 15:01:22,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:22,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1854 transitions. [2023-11-17 15:01:22,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 103.0) internal successors, (1854), 18 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 328.0) internal successors, (6232), 19 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,295 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 328.0) internal successors, (6232), 19 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,295 INFO L175 Difference]: Start difference. First operand has 104 places, 106 transitions, 922 flow. Second operand 18 states and 1854 transitions. [2023-11-17 15:01:22,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 207 transitions, 1743 flow [2023-11-17 15:01:22,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 207 transitions, 1737 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-17 15:01:22,372 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 1374 flow [2023-11-17 15:01:22,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1374, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2023-11-17 15:01:22,374 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 97 predicate places. [2023-11-17 15:01:22,374 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 1374 flow [2023-11-17 15:01:22,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 96.4) internal successors, (1446), 15 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:01:22,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:22,375 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:22,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:01:22,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:22,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:22,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2056534059, now seen corresponding path program 1 times [2023-11-17 15:01:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:22,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057899812] [2023-11-17 15:01:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:22,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:01:22,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 15:01:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:01:22,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 15:01:22,454 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 15:01:22,455 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-17 15:01:22,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-11-17 15:01:22,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 15:01:22,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-17 15:01:22,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 15:01:22,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 15:01:22,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:01:22,457 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:01:22,463 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:01:22,464 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:01:22,516 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre48 could not be translated [2023-11-17 15:01:22,517 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre50 could not be translated [2023-11-17 15:01:22,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:01:22 BasicIcfg [2023-11-17 15:01:22,530 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:01:22,531 INFO L158 Benchmark]: Toolchain (without parser) took 15066.63ms. Allocated memory was 241.2MB in the beginning and 424.7MB in the end (delta: 183.5MB). Free memory was 186.7MB in the beginning and 332.4MB in the end (delta: -145.7MB). Peak memory consumption was 39.4MB. Max. memory is 8.0GB. [2023-11-17 15:01:22,531 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:01:22,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.70ms. Allocated memory is still 241.2MB. Free memory was 186.7MB in the beginning and 157.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-11-17 15:01:22,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.39ms. Allocated memory is still 241.2MB. Free memory was 157.3MB in the beginning and 154.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:01:22,532 INFO L158 Benchmark]: Boogie Preprocessor took 54.61ms. Allocated memory is still 241.2MB. Free memory was 154.2MB in the beginning and 152.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:01:22,532 INFO L158 Benchmark]: RCFGBuilder took 565.84ms. Allocated memory is still 241.2MB. Free memory was 152.6MB in the beginning and 133.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 15:01:22,532 INFO L158 Benchmark]: TraceAbstraction took 13707.79ms. Allocated memory was 241.2MB in the beginning and 424.7MB in the end (delta: 183.5MB). Free memory was 132.7MB in the beginning and 332.4MB in the end (delta: -199.7MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:01:22,534 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 657.70ms. Allocated memory is still 241.2MB. Free memory was 186.7MB in the beginning and 157.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 75.39ms. Allocated memory is still 241.2MB. Free memory was 157.3MB in the beginning and 154.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.61ms. Allocated memory is still 241.2MB. Free memory was 154.2MB in the beginning and 152.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 565.84ms. Allocated memory is still 241.2MB. Free memory was 152.6MB in the beginning and 133.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 13707.79ms. Allocated memory was 241.2MB in the beginning and 424.7MB in the end (delta: 183.5MB). Free memory was 132.7MB in the beginning and 332.4MB in the end (delta: -199.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre50 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 157 PlacesBefore, 34 PlacesAfterwards, 160 TransitionsBefore, 33 TransitionsAfterwards, 8602 CoEnabledTransitionPairs, 7 FixpointIterations, 29 TrivialSequentialCompositions, 98 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 4 ChoiceCompositions, 156 TotalNumberOfCompositions, 11163 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8529, independent: 8336, independent conditional: 0, independent unconditional: 8336, dependent: 193, dependent conditional: 0, dependent unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6240, independent: 6171, independent conditional: 0, independent unconditional: 6171, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6240, independent: 6143, independent conditional: 0, independent unconditional: 6143, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 97, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 183, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8529, independent: 2165, independent conditional: 0, independent unconditional: 2165, dependent: 124, dependent conditional: 0, dependent unconditional: 124, unknown: 6240, unknown conditional: 0, unknown unconditional: 6240] , Statistics on independence cache: Total cache size (in pairs): 245, Positive cache size: 222, Positive conditional cache size: 0, Positive unconditional cache size: 222, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 941]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(5)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1021] 0 pthread_t id1, id2; [L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={6:0}, m={4:0}, top=0] [L990] 1 int i; [L991] 1 unsigned int tmp; [L992] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={6:0}, m={4:0}, top=0] [L1006] 2 int i; [L1007] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L992] COND TRUE 1 i<(5) [L995] 1 tmp = __VERIFIER_nondet_uint() [L996] CALL 1 assume_abort_if_not(tmp < (5)) [L23] COND FALSE 1 !(!cond) [L996] RET 1 assume_abort_if_not(tmp < (5)) [L997] CALL, EXPR 1 push(arr,tmp) [L962] COND FALSE 1 !(top==(5)) [L969] CALL, EXPR 1 get_top() [L954] 1 return top; [L969] RET, EXPR 1 get_top() [L969] 1 stack[get_top()] = x [L970] CALL 1 inc_top() [L946] 1 top++ [L970] RET 1 inc_top() [L972] 1 return 0; [L997] RET, EXPR 1 push(arr,tmp) [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) [L999] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=4, top=1] [L992] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, tmp=4, top=1] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; [L976] RET, EXPR 2 get_top() [L976] COND FALSE 2 !(get_top()==0) [L983] CALL 2 dec_top() [L950] 2 top-- VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L983] RET 2 dec_top() [L984] CALL, EXPR 2 get_top() [L954] 2 return top; [L984] RET, EXPR 2 get_top() [L984] EXPR 2 stack[get_top()] [L984] 2 return stack[get_top()]; [L1012] RET, EXPR 2 pop(arr) [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1007] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; [L976] RET, EXPR 2 get_top() [L976] COND TRUE 2 get_top()==0 [L979] 2 return (-2); [L1012] RET, EXPR 2 pop(arr) [L1012] COND TRUE 2 !(pop(arr)!=(-2)) [L1013] CALL 2 error() [L941] 2 reach_error() VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1024]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 941]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 274 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.5s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 649 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 649 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3877 IncrementalHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 0 mSDtfsCounter, 3877 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1374occurred in iteration=9, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 1393 SizeOfPredicates, 1 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 3/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-17 15:01:22,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...